Difference between revisions of "GPU610/NullPointerException"
(→Saad Mohammad:) |
(→Saad Mohammad:) |
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===== PROJECT ===== | ===== PROJECT ===== | ||
| + | Encrypts and decrypts images. | ||
| − | + | Original Project: [https://github.com/markwatson/Image-Encrypt Image-Encrypt Github] | |
| − | |||
===== PROFILING RESOURCE ===== | ===== PROFILING RESOURCE ===== | ||
| + | Profiled the application using: | ||
| − | + | ::SYSTEM: | |
| − | + | ::::Matrix | |
| − | |||
| − | + | ::IMAGE: | |
| − | + | ::::JPEG Format | |
| − | + | ::::324KB | |
| − | + | ::::1598 x 982 | |
===== PROFILING RESULTS ===== | ===== PROFILING RESULTS ===== | ||
| − | |||
Encryption: | Encryption: | ||
<code> | <code> | ||
Revision as of 21:38, 6 March 2013
GPU610/DPS915 | Student List | Group and Project Index | Student Resources | Glossary
Contents
NullPointerException
Team Members
Progress
Assignment 1
Philip Aziz:
- Philip Aziz - Calculating Prime Numbers
Only the inner loop would be possible to Parellelize but would still require to validate 1 prime number at a time due to need to validate against previous prime numbers.
while (count < n){
flag = 1;
i = 1;
checkKey = int((sqrt (prime))+1);
//checks prime numbers for divisible values
while(primes[i] < checkKey and flag){
if ((prime % primes[i])==0){
flag = 0;
}
i++;
}
if(flag){
primes[count] = prime;
count++;
}
prime +=2;
}
| n | Elapsed Time |
|---|---|
| 10,000 | 0 |
| 100,000 | 1 |
| 1,000,000 | 8 |
| 10,000,000 | 220 |
| 100,000,000 | 6200 |
Saad Mohammad:
PROJECT
Encrypts and decrypts images.
Original Project: Image-Encrypt Github
PROFILING RESOURCE
Profiled the application using:
- SYSTEM:
- Matrix
- SYSTEM:
- IMAGE:
- JPEG Format
- 324KB
- 1598 x 982
- IMAGE:
PROFILING RESULTS
Encryption:
Each sample counts as 0.01 seconds.
% cumulative self self total time seconds seconds calls us/call us/call name 53.85 0.14 0.14 5979744 0.02 0.02 aesEncrypt::ffmul(unsigned char, unsigned char) 30.77 0.22 0.08 207630 0.39 0.39 aesEncrypt::subBytes(char*) 11.54 0.25 0.03 186867 0.16 0.91 aesEncrypt::mixColumns(char*) 3.85 0.26 0.01 20763 0.48 12.52 aesEncrypt::encryptBlock(char*) 0.00 0.26 0.00 207630 0.00 0.00 aesEncrypt::shiftRows(char*) 0.00 0.26 0.00 20764 0.00 0.00 accessJpeg::hasMore() 0.00 0.26 0.00 20763 0.00 0.00 accessJpeg::accessBlock() 0.00 0.26 0.00 40 0.00 0.00 aesEncrypt::sboxify(unsigned char) 0.00 0.26 0.00 10 0.00 0.00 aesEncrypt::roundify(unsigned char) 0.00 0.26 0.00 1 0.00 0.00 _GLOBAL__sub_I__ZN10accessJpegC2Ev 0.00 0.26 0.00 1 0.00 0.00 _GLOBAL__sub_I__ZN11encryptJpeg7processEc 0.00 0.26 0.00 1 0.00 0.00 _GLOBAL__sub_I_main 0.00 0.26 0.00 1 0.00 0.00 accessJpeg::readInFile(char*) 0.00 0.26 0.00 1 0.00 0.00 accessJpeg::jumpToStart() 0.00 0.26 0.00 1 0.00 0.00 accessJpeg::writeOutFile(char*) 0.00 0.26 0.00 1 0.00 0.00 accessJpeg::~accessJpeg() 0.00 0.26 0.00 1 0.00 0.00 aesEncrypt::setTextKey(std::string) 0.00 0.26 0.00 1 0.00 0.00 aesEncrypt::expandKey() 0.00 0.26 0.00 1 0.00 0.00 aesEncrypt::~aesEncrypt()
Decryption:
Each sample counts as 0.01 seconds.
% cumulative self self total time seconds seconds calls us/call us/call name 58.97 0.23 0.23 11959488 0.02 0.02 aesEncrypt::ffmul(unsigned char, unsigned char) 25.64 0.33 0.10 207630 0.48 0.48 aesEncrypt::invSubBytes(char*) 7.69 0.36 0.03 186867 0.16 1.39 aesEncrypt::invMixColumns(char*) 5.13 0.38 0.02 20763 0.96 18.78 aesEncrypt::decryptBlock(char*) 2.56 0.39 0.01 207630 0.05 0.05 aesEncrypt::invShiftRows(char*) 0.00 0.39 0.00 20764 0.00 0.00 accessJpeg::hasMore() 0.00 0.39 0.00 20763 0.00 0.00 accessJpeg::accessBlock() 0.00 0.39 0.00 40 0.00 0.00 aesEncrypt::sboxify(unsigned char) 0.00 0.39 0.00 10 0.00 0.00 aesEncrypt::roundify(unsigned char) 0.00 0.39 0.00 1 0.00 0.00 _GLOBAL__sub_I__ZN10accessJpegC2Ev 0.00 0.39 0.00 1 0.00 0.00 _GLOBAL__sub_I__ZN11encryptJpeg7processEc 0.00 0.39 0.00 1 0.00 0.00 _GLOBAL__sub_I_main 0.00 0.39 0.00 1 0.00 0.00 accessJpeg::readInFile(char*) 0.00 0.39 0.00 1 0.00 0.00 accessJpeg::jumpToStart() 0.00 0.39 0.00 1 0.00 0.00 accessJpeg::writeOutFile(char*) 0.00 0.39 0.00 1 0.00 0.00 accessJpeg::~accessJpeg() 0.00 0.39 0.00 1 0.00 0.00 aesEncrypt::setTextKey(std::string) 0.00 0.39 0.00 1 0.00 0.00 aesEncrypt::expandKey() 0.00 0.39 0.00 1 0.00 0.00 aesEncrypt::~aesEncrypt()
